CREATE TABLE tblModules
(
Module_ID nvarchar(10) PRIMARY KEY,
Module_Title nvarchar(MAX) NOT NULL
);

CREATE TABLE tblQuestions
(
Q_ID int PRIMARY KEY IDENTITY(1,1),
Question_Text varchar(1000) NOT NULL

);

CREATE TABLE tblFeedback
(
Submission_ID int PRIMARY KEY IDENTITY(1,1),
Username varchar(100) NOT NULL,
Domain varchar(50) NOT NULL,
DateTime_Submitted datetime NOT NULL
Module_ID nvarchar(10)
FOREIGN KEY (Module_ID) REFERENCES tblModules (Module_ID);
);

CREATE TABLE tblAnswers
(
Q_ID int NOT NULL,
Submission_ID int NOT NULL,
Answer_Text varchar(max),
FOREIGN KEY (Q_ID) REFERENCES tblQuestions(Q_ID),
FOREIGN KEY (Submission_ID) REFERENCES tblFeedback(Submission_ID)
);

SELECT
   *
FROM
   tblQuestions Q
WHERE
   EXISTS (SELECT *
      FROM
          tblAnswers A
          JOIN
          tblFeedback F ON A.Submission_ID = F.Submission_ID
      WHERE
          Q.Q_ID = A.Q_ID AND F.Module_ID = @moduleID)

SELECT Q_ID, Question_Text tblQuestions a
WHERE EXISTS (SELECT NULL FROM tblAnswers a WHERE a.Q_ID = q.Q_ID)